| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve focusing accuracy in automatic focus control that determines a focal position by actually moving a lens. <P>SOLUTION: A focus control circuit 100 is installed in an image pickup apparatus 500 that includes: a lens 10; a driver element 12 for adjusting the position of the lens 10; and a position detecting element 14 for detecting the position of the lens 10. A feedback equalizer 35 included in the focus control circuit 100 generates a drive signal to be used to adjust the position of the lens 10 to a target position, based on a difference between the position of the lens 10 identified by the output signal of the position detecting element 14 and the target position of the lens 10 set externally, and controls the driver element 12. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
